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authorkmacy <kmacy@FreeBSD.org>2008-11-22 05:55:56 +0000
committerkmacy <kmacy@FreeBSD.org>2008-11-22 05:55:56 +0000
commit9d3bb599b193495af5419ee85be4afe9a18b6091 (patch)
tree0291af1a0fda6ca2d8e62cb1f363d45baefe0303 /sys/powerpc/include/atomic.h
parentfb7f8e0e59cfa5b30a6f0b0d1377402f14c64673 (diff)
downloadFreeBSD-src-9d3bb599b193495af5419ee85be4afe9a18b6091.zip
FreeBSD-src-9d3bb599b193495af5419ee85be4afe9a18b6091.tar.gz
- bump __FreeBSD version to reflect added buf_ring, memory barriers,
and ifnet functions - add memory barriers to <machine/atomic.h> - update drivers to only conditionally define their own - add lockless producer / consumer ring buffer - remove ring buffer implementation from cxgb and update its callers - add if_transmit(struct ifnet *ifp, struct mbuf *m) to ifnet to allow drivers to efficiently manage multiple hardware queues (i.e. not serialize all packets through one ifq) - expose if_qflush to allow drivers to flush any driver managed queues This work was supported by Bitgravity Inc. and Chelsio Inc.
Diffstat (limited to 'sys/powerpc/include/atomic.h')
-rw-r--r--sys/powerpc/include/atomic.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/sys/powerpc/include/atomic.h b/sys/powerpc/include/atomic.h
index d515a6a..4ac9f0c 100644
--- a/sys/powerpc/include/atomic.h
+++ b/sys/powerpc/include/atomic.h
@@ -39,6 +39,10 @@
#define __ATOMIC_BARRIER \
__asm __volatile("sync" : : : "memory")
+#define mb() __ATOMIC_BARRIER
+#define wmb() mb()
+#define rmb() mb()
+
/*
* atomic_add(p, v)
* { *p += v; }
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